The Knights of Ren were introduced in The Force Awakens, but were seen little throughout that movie or even at all, in regards to TLJ. They were announced to appear in The Rise of Skywalker...
ET's Ash Crossan spoke with Kelly Marie Tran about wrapping up her 'Star Wars' journey, and how she thinks audiences will be 'really happy' with 'Star Wars: The Rise of Skywalker'